$1.$ Command$($s$)$ sequence used to list the contents of the root file system directory.$($Hint:$$ remember that $/$represents the root in Linux.$)$

ls $/$

$2.$ Command$($s$)$ sequence used to list the contents of the root file system directory in long format.$($Hint:$$ remember that $/$ represents the root in Linux.$)$

ls $-$l

$3.$ Command$($s$)$ sequence used to make $/$etc your current working directory.$($Hint: $/$etc signifies etc is off the root, not your home directory$)$ Then go back to your home directory.$$ How would you accomplish these tasks?

cd $/$etc

$4.$ Command$($s$)$ sequence used to change to the $/$dev directory.$($Hint: $/$dev signifies dev is off the root, not your home directory$).$ Then go back to your home directory using a tilde $($~$)$ in the command.$$ How would you accomplish these tasks?

$$